申请人:Seikagaku Kogyo Kabushiki Kaisha
公开号:US06335444B1
公开(公告)日:2002-01-01
A process for preparing a 2-acylamino alcohol derivative which comprises (A) reacting an aminopropanol derivative represented by the following formula (1):
Y—CH2—C*H (NHP1)—C*H(OH)—R1 (1)
with an amine represented by R2H to synthesize an amino alcohol derivative represented by the following formula (2):
R2—CH2—C*H(NHP1)—C*H(OH)—R1 (2)
(B) leaving P1 from said amino alcohol derivative represented by formula (2) to synthesize an amino alcohol derivative represented by the following formula (3):
R2—CH2—C*H(NH2)—C*H(OH)—R1 (3)
(C) reacting said amino alcohol derivative represented by formula (3) with a carboxylic acid represented by R11COOH or a reactive derivative thereof to prepare a 2-acylamino alcohol derivative represented by the following formula (4):
R2—CH2—C*H(NHCOR11)—C*H(OH)—R1 (4 )
wherein * represents an asymmetric carbon atom, and P1, R1, R2 and R11 are defined in the specification. A process for preparing alcohol derivatives having an acylamino group through several steps from amino group-protected 2-aminopropanol derivatives, and novel amino alcohols useful as intermediates in the process for preparing the alcohol derivative.
制备2-酰胺基醇衍生物的方法包括(A)将以下式(1)所代表的氨基丙醇衍生物:Y—CH2—C*H(NHP1)—C*H(OH)—R1 (1) 与由R2H代表的胺反应,合成以下式(2)所代表的氨基醇衍生物:R2—CH2—C*H(NHP1)—C*H(OH)—R1 (2) (B)从所述由式(2)所代表的氨基醇衍生物中去除P1,合成以下式(3)所代表的氨基醇衍生物:R2—CH2—C*H(NH2)—C*H(OH)—R1 (3) (C)将由式(3)所代表的氨基醇衍生物与由R11COOH代表的羧酸或其反应性衍生物反应,制备以下式(4)所代表的2-酰胺基醇衍生物:R2—CH2—C*H(NHCOR11)—C*H(OH)—R1 (4) 其中*代表不对称碳原子,P1、R1、R2和R11在说明书中有定义。通过从氨基保护的2-氨基丙醇衍生物经过几个步骤制备含有酰胺基团的醇衍生物的方法,以及在制备醇衍生物过程中作为中间体有用的新型氨基醇。